Railway-car bolster.



T. A. GOLLISON.

RAILWAY GAB. BOLSTER.

APPLICATION FILED 0012a, 1906.

Patented Apr. 20, 1909.

2 SHEETS-SHEET 1.

. FIG. 1

FIG. 2

@- vmem M 3? v WITNESSES.

w a R. W i I v T. A, GOLLISON. RAILWAY UAR BOLSTER. APPLIOATION FILED 001:. 20, 1906.

Patented Apr. 20, 1909. 2 SHEETS-SHEET- 2.

FIG.6

FIG. 7

' IIUIIIIIIIIII'A FIG. 8

WITNESSES.

'IHO.\I1\S UOLLISOX, OF LEBANON, PENNSYLVANIA.

RAILWAY-CAR BOLSTER.

Specification of Letters Patent.

Application filed October 26, 1906.

Pa'tented April 20, 1909.

Serial No. 340,660.

To all whom it may concern:

Be it known that I, THOMAS A. toLLisox,

a resident of Lebanon, in the county of Lebanon and State of Pennsylvania, have invented a new and useful improvement in Railway-(Jar Bolsters; and 1 do hereby declare the following to be a full, clear, and exact description thereof.

This inventionrelates to bolsters for railway cars, either truck bolstersor body bolsters.

The object of the invention is to provide an all wrought metal bolster formed in a single piece,,which is light yet strong, and which is cheap and easy to manufactiire. p

The invention consists, generally stated, in forming the bolster frorng'a plate by pressing and bending to formtop and bottom chord members and a connecting web or webs, as hereinafter described and claimed. In the accompanying drawings, Figure l is a plan view of a bolster constructed according to my invention; Fig. 2 is in part a side view and in part a central longitudinal vertioal section thereof; Fig. 3 is a longitudimil section at the end of the bolster on the line 3-3, Fig. l .Fig. 4 is a vertical cross section on the line 4-4, Fig. I; Fig. 5 is a similar view on the line 5-5, Fig. l Fig. 6 is a plan view show ing the invention applied to a body bolster; Fig. 7 is in part a side view and in part a central verticalsection of the same; and Fig. 8 is a cross section on the line 8--S Fig. 6.

My bolster is formed from a single plate pressed and bent to shape to provide suit able. top and bottom chord members and a connecting web or strut, thus dispensing 'with all riveting, punching or other operations for connecting the members, making a bolster which is cheap, light and strong.

Figs. 1 to 5 show the invention adapted for a truck bolster. This bolster has a top plate 1 which at its edges is bent back upon ltselh'as at 2, and carried inwardly toward the neutral axis of the bolster to form llanges 3, and bot-i members oi" the plate then ben'ig bent at right angles and. extending downwardly tormmg vertical web members 4- which may be directly in (JOIltilCt with each other but which preferably are spaced apart, as shown, so as to give greater equilibrium to the bolster and make it more stable against rolling movements. Both web members of the bolster have their lower edges turned outwardly to form flanges 5 which form the botspring caps.

tom chord of the bolster. This bolster is prtd'erably made of greater depth at its middle than at its ends, shown in Fig. 2. The lower edge may be curved, as shown in said figure, or may be a straight inclined line from the center toward the ends as shown in Fig.

I. The end portions of the bolster prefer ably are provided with horizontal lower edges so as to give a good bearing-for the 1th a center brace 7 formed as a casting inserted between. the web members and se cured thereto by rivets 8 passing through alining openings in the web members and castin This casting is provided with a contra opening 8 located beneath an opening 9 in the top plate for receiving the king pin. with the outwardly projecting wings 10 which are riveted to the bottom flanges 5 of the bolster. The ends of the, bolster are also preferably provided \wlbl] braces 12 in the form of castings inserted between the web members of the bolster and secured by means of rivets 13. Column guides 14 shown castings, are secured to the outer faces oi the webs by means of the rivets 13. Bearing plates 15 are also provided at the ends to rest on the truck springs, which plat-es may either be integral parts of the. castings 12 or separate plates riveted to the bottom flanges oi the bolster. A center bearing plate 17 and side bearings 18 are rivcted to the top plate 1. v

This bolster can readily be adapted as a body bolster, this being shown in Figs. 6, 7 and 8. This modification shows the lower edge of the bolster formed on inclined straight instead of curved lines as in Fig. 2, but obviously the forms are interchangeable in this respect. When used as a body bolster, the center bearing plate it) and side 1 bearings 20 are secured to the lower edge of the bolster, such. as providing the some with web portions 20 projecting up in between the web members of the bolster and secured to the latter by rivets 21 and also having flanges 22 which are riveted to the bottom flanges of the bolster. To the end of this bolster may be secured a casting 24 toserve its (41 support for the side stringers of the car The design shown. is very elastic, as it is ossible, by making the plate of greater or ess width, to very materlall vary the bolster so as to take care of all conditions of At its bottom it is preferably provided The bolster is shown provided 7 .at the central I necessary in making a built up bolster.

use. For instance, if greater strength is needed, the plate may be left slightly wider, thus forming very wide bottom flanges 5 which add materially to the strength of the bolster to resist both vertical loads and end shocks. these bottom flanges 5 may be made wider portion of the bolster, as shown at 25, Fig. 6 j

The bolster body is composed of only a single 'piece .which can be bent to shape by suitable dies, either hot or cold. This does away with all the punching and rivet li rfig e usual appurtenances, such-as center and end braces, center plate and side bearings can be easily connected to the bolster. The latter in cross section is of general I shape having the top or com ression chord formed by the flanges 3 whic are of double thickness of metal, the bottom or tension chord formed and center tom chords and a vertical by the flanges 5, and the web being double and spaced apart so as to get somewhat the effect of a box girderf The bolster is ver strong for the quantit of metal used an as above stated, the design is such that by merely varying the width or shape of the plate the bolster can be varied to meet various conditions of use.

While in the drawings I have shown only one general cross section, I wish it understood that the invention comprehends the use of a single plate bent to form cross sections which may be materially different from that shown an I wish it understood, therefore, that no limitations are to be imposed upon the terms of the claims hereinafter made, either by the specific illustration or specific description.

What I claim is:

1. A bolster comprising a single plate and .being hollow and provided with top and bottom laterall pro ecting portions, and side earings secured to one of said laterally projecting portions.

2. A bolster comprising a single plate rovided with laterally projecting top and hotconnecting web, and column guides secured to said webs. I

3. A bolster comprising a single pressed plate and being of general I-shape in cross section, side and center bearings secured to one of the flanged edges of said plate, and column guides secured to the web thereof.

4. A bolster composed of pressed plate and having top and bottom flangesand' a connecting Web, one pair of said flanges being of double thickness of plate, and side and center bearings secured to one of the pairs of flanges of said bolster.

5. A bolster composed of pressed plate having top and bottom flanges and a 0011- necting web, the top flangesbeing of double By slightly tapering the plate,v

enmesthickness of plate, and side and center bearings secured to one pair ofsaid flanges.

6. A bolster. com )rising a single pressed late having laterally projecting to and liottom chords and a connecting we ,said web being of double thickness of plate, and

column guides secured to said web.

7. bolster formed of a single pressed plate having laterally projecting top-and bottom chords and a connecting web, the latter being of two thicknesses of plate spaced apart.

8. A pressed steel bolster having top and bottom chords and a connecting web, said webbeing formed of two thicknesses of plate spaced apart.

9. A pressed steel bolster having top and bottom flanges and connecting web, the top flan es and the web being a double thickness of plate, said web plates being spaced apart.

10. A bolster formed of a pressed )late and having a top late bent back on itself to form flanges, then ent downwardly to form webs spaced apart and then outwardly to form a bottom chord.

11. A bolster formed of a single pressed late of hollow form with top and ottom aterally projecting portions and of varying depth.

12. A bolster formed of a single pressed plate having laterally projecting top and bottom chords and a connecting web, the latter being of varying depth.

13. A bolster formed of a single pressed plate of general 1' form, having top and bottom flanges and a connecting web, the latter being of varying depth.

14. A bolster of general I sha e in cross section comprising a single resse plate construction having spaced apart.

15. A bolster of general I shape in cross section composed of a single pressed plate having a double web member, and braces secured between said web members.

16. A bolster bottom chord, and a connecting web, formed of pressed plate metal and having one of the chord members and the web member of double thickness of plate.

17. A bolster formed of a single piece of metal pressed into I-beam form and cross section, such bolster at the center being relatively wider than at the ends, and a center plate and column guides secured to said olster. In testimony whereof, I the said THOMAS A. COLLISION have hereunto set my hand.

a (loube web member comprising a top chord, a 

